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Symptoms

When you try to generate an offline address book (OAB) file that is larger than 2GB in a Microsoft Exchange Server 2010 environment, the generation process fails. Additionally, the following events are logged in the Application log on the Exchange Server 2010 mailbox server:

Cause

This issue occurs because the OAB generation process encounters an issue when it tries to calculate the location in the OAB file at which to insert data. The OAB generation process encounters this issue when the extracted OAB file is larger than 2GB.

Resolution

To resolve this issue, install the following cumulative update:

2661854 Description of Update Rollup 2 for Exchange Server 2010 Service Pack 2

More Information

For more information about offline address books, visit the following Microsoft website:

General information about offline address booksFor more information about the ERROR_NEGATIVE_SEEK error, visit the following Microsoft website:

General information about the ERROR_NEGATIVE_SEEK errorFor more information about the SetFilePointer function, visit the following Microsoft website:

General information about the SetFilePointer functionFor more information about how to manage offline address books, visit the following Microsoft website:

General information about how to manage offline address books

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